| Based on a review of research, this article examines the extent to which recent reforms related to professional development addressed different aspects of school capacity. The reforms include teacher networks in California, the use of consultants and inter visitation in New York City's District 2, student assessments in Kentucky and Maryland, and school improvement plans in South Carolina. The article finds that these reforms generally strengthened teachers' knowledge, skills, and dispositions but had uneven effects on other aspects of school capacity. The final section discusses four implications of the findings and suggests some guidelines for district and state policy regarding professional development. The guidelines include the need for districts and states to promote within-school collaboration and for districts to negotiate the tension between promoting internal school coherence while providing some autonomy to individual schools. |